PLATE CXCIII. 



Alktiioi'tkkis I>\(()i;i 1). W. 



(F'age .S.H1. ) 



Fi<r>^. 1 and 2. Tvpii-^l fragiufiit.s »»f the piniiic of thin spec-it's. From tlio. roof of 



Lykens coal No. 2 at the lower Eureka tunnel. 

 Fijr. la. Enlarged pinnule from the fragment shown on the left of fig. 1, illustrating 

 the nervation. Twice the natural size. 



I ji/ti r Liih'iix (lirisioii — St'innirc zniic. 



NeIROITEKI.S I-INATA I >. \V. 

 ( Page 895. ) 



Figs. :!-7. Specimens showing the variation in form and size of the pinnules of this 

 species. The originals of figs. 3, 4, and 5 are from the roof of 

 L}'kens coal No. 1 at the Lincoln colliery; the type of fig. 6 is from 

 the rock dump at the same colliery; that of fig. 7 is from i)roV)a1)ly 

 the same horizon at the New liincohi colliery. 



Figs. ."ia, (ia. 7a. Enlarged details from the originals of tigs. 5, 6, and 7, showing the 

 thin, outward-curved nervation. Twice the natural size. 



I'p/xr Li/kni.f dirisiou. 



SpHENOIMIVLMM TENEKKIMIM Ett. Var. KU)NG.\TrM D. W. 



( Pago S9<s. I 



Figs. S and S». Specimens illustrating the aspect of fragments of this species, in 

 which the apices of the slender, rather lax, leaflets are usually 

 buried in the matrix or broken away. The specimens are from 

 the New Lincoln colliery, where they ])robably occur in the roof 

 of Lykens coal Ni >. 2. 



Fig. Sa. Enlarged detail, showing the division and n^-rvation of a young katlet of this 

 species. Twice th? natural size. 



Ijijii r Li/kriix (lirixioii. 

 (_'.\KniO(AUI'OX COKXITIM Du. 



I Piigi--9as.) 



Fiii. 1". Ordinary example; from lii<l II, o.'H) feet below the Twin coal, in the gap at 

 Pottsville. 



I'jijii r Li/b'iix iliriaidii. 



CaHDIoCAHI'ON < tlUTVl I). W. 



■ (Pagt'9t)7.) 



Fig. 11. This specimen shows the very broad, thin wing, dilated in the lower jior- 

 ti(jn, which is traversed l)y an ol)Scure cuneate chalaza. The latter 

 is delineated more distinctly than it appears in the original. The 

 specimen is from the roof of Lykens coal No. 2 (or l?i at the New Lincoln 

 colliery. 



I'/i/Hi- Ijiki'iix (lirixii)ii. 

 930 



